Found the following in Reader's Digest. May be of some interest to you othermore mature mathematics teachers.

1960s ARITHMETIC TEST: RA logger cuts and sells a truckload of lumber for$100. His cost of production is four-fifths of that amount. what is hisprofit?S T70s new-math test: RA logger exchanges a Set (L) of lumber for a set (M) ofmoney. The cardinality of set M is 100. The Set C if production costscontains 20 fewer points. What is the cardinality of Set P of profits?S T80s Rdumbed down R version: RA logger cuts and sells a truckload of lumberfor $100. His cost is $80, his profit is $20. Find and circle the number 20. T90s version: RAn unenlightened logger cuts down a beautiful stand of 100trees in order to make a $20 profit. Write an essay explaining how you feelabout this as a way to make money. Topic for discussion: How did the forestbirds and squirrels feel?S